Add CODECOV_TOKEN to Codecov action

Author: JimBobSquarePants

.github/workflows/build-and-test.yml

@@ -161,7 +161,7 @@ jobs:
         if: matrix.options.codecov == true && startsWith(github.repository, 'SixLabors')
         with:
           flags: unittests
-
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   Publish:
     needs: [Build]